2012 Lincoln MKX brakes problems

Filed Sep 1, 2025 · Brakes · TN

Recalled master cylinder brake booster was repaired at the dealership under the recall approx 4 or 5 years ago. The same issue has began again. Out of nowhere while braking, the pedal will become soft and press to the floor. During this time, the car will not slow down. This is resembling a defective part.

Filed Dec 13, 2024 · Brakes · TN

brake booster

Filed May 30, 2024 · Brakes · IL

What system Failed: Hydraulic Control Unit within the braking system. Brake Pedal and Master cylinder in good working order. Safety Concern: Vehicle failed to stop. Peddle completely to the floor. Accident avoided. Problem Reproduced or confirmed by Service Center: Yes, at a cost of $1,699.00 Inspected: Yes. Vehicle has low miles. Odometer: 114,591 Warnings: No lights or warnings, attempted to stop and brake pedal to the floor. Stopped driving until repairs made. Unsafe! Vehicle failed to stop in normal traffic without warning, speed was approximately 45 mph. Personal Information: Site stated do not list personal information. Therefore, repair invoice available upon request. No upload given at this time.

Filed Jan 19, 2023 · Brakes · OH

While leaving out my driveway my brakes went straight to the floor before stopping. After I put the car in park and put my foot on the break again it was hard to push the brake pedal. I also hear air coming from the break pedal area. I had no warning and still do not have any warnings. I’ve noticed after reading a lot of reviews this seem to be a common problem and it’s not safe. Mileage 104,000

Filed Jan 4, 2023 · Brakes · 130,000 miles · MS

The contact owns a 2012 Lincoln MKX. The contact stated that the brake pedal would depress to the floorboard without warning. The contact took the vehicle to the dealer and the brake master cylinder was replaced; however, the failure persisted. The vehicle was taken back to the dealer where it was then diagnosed with a defective ABS system; however, the part for the repair was on backorder. The manufacturer was also notified of the failure and provided the same information as the dealer. The contact was referred to the federal safety agency Hotline for assistance. The vehicle was not repaired. The failure mileage was approximately 130,000.

Filed May 25, 2022 · Brakes · 138,300 miles · PA

The contact owns a 2012 Lincoln MKX. The contact stated while driving approximately 45 MPH, there was a brake booster fault and the contact depressed the brake pedal to the floor. There were no warning lights illuminated. The vehicle was taken to a local dealer who diagnosed the failure with the brake booster. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 138,300.

Filed Apr 15, 2022 · Brakes · 67,000 miles · GA

The contact owns a 2012 Lincoln MKX. The contact stated while driving approximately 35 MPH, the brake pedal became firm and difficult to depress. There were no warning lights illuminated. The vehicle was taken to the local dealer, who diagnosed the failure to be brake booster and brake master cylinder failure. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 67,000. The contact stated the brake booster was replaced.

Filed Feb 1, 2022 · Brakes · OH

The braking system failed to adequately stop the car. In contacting the Lincoln Customer Service, this failure mode is associated with a Lincoln Customer program # 13N02. This program has a 10 years or 150000 miles limit for repair. The vehicle (MKX - 2012) has 65000 miles and was purchased 12/20/2011. It is 1 month out of the defined period. The car has only been driven a few hundred miles since 2020 due to illness and death of the owners. The brake system is a safety device and should not be considered a "Customer Care" program with limits as noted above. The failure of a breaking system will cause potential personal injury including death and should be reconsidered as a safety recall or the program should be extended. The incident of a major traffic accident on the highway was avoided that would have involved multiple cars if not taking evasive action in the median. The problem was confirmed by a dealer, verbally given the operation of the brake system. There were no warning lamps or any other indication prior to the incident. The VIN: [XXX] Thank you for your follow-up of this situation. [XXX], [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

Filed Oct 8, 2021 · Brakes · NC

Brake pressure loss without warning

Filed Oct 2, 2021 · Brakes · FL

I had to slam on the brakes due to a driver pulling out in front of me without looking. The brakes went to the floor and I had difficulty getting the car stopped. I took it in to my mechanic and they diagnosed as a master cylinder, which I had replaced 7 months prior for a similar incident. But, replacing the master cylinder didn’t solve the problem. After more work, they replaced the entire ABS system for the rear brakes ($1900). I drove it 3 times and the brakes locked up on their own while I was driving at 60 miles an hour. When we got to the side of the road, smoke was billowing out of the brakes and the car would not move even though we were pushing the gas. We had the car towed ($300) back to the mechanic. They said the brake fuel line had gotten clogged and the front master cylinder needed to be replaced ($900). Drove twice and same issue, this time smoke billowing out of rear brakes. All brake fluid has completely drained and car needs to be repaired again. It is not drivable, so we will have to have it towed again. I’m so frustrated because this is extremely dangerous and I am stuck with a vehicle that seems to be irreparable and not drivable. Shame on Ford for not recalling this when it is obviously such an issue.